* doc/extend.texi (x86 Built-in Functions): Document
__builtin_nanq and __builtin_nansq.
From-SVN: r237339
@item __float128 __builtin_huge_valq (void)
Similar to @code{__builtin_huge_val}, except the return type is @code{__float128}.
@findex __builtin_huge_valq
+
+@item __float128 __builtin_nanq (void)
+Similar to @code{__builtin_nan}, except the return type is @code{__float128}.
+@findex __builtin_nanq
+
+@item __float128 __builtin_nansq (void)
+Similar to @code{__builtin_nans}, except the return type is @code{__float128}.
+@findex __builtin_nansq
@end table
The following built-in functions are always available and can be used to